<script setup>
import {ref , getCurrentInstance , onMounted, reactive} from "vue";
import axios from "axios";
import * as echarts from "echarts";
const {proxy} = getCurrentInstance();

const getImageUrl=(user)=>{
  return new URL(`../assets/images/${user}.png`,import.meta.url).href;
}
const tableData = ref([])
const countData = ref([])
const chartData = ref([])
const tableLabel = ref({
  name:"课程",
  todayBuy:"进入购买",
  monthBuy:"本月购买",
  totalBuy:"总购买",
})

//observer 接收观察器实例对象
const observer = ref(null)

//这个是折线图和柱状图 两个图表共用的公共配置
const xOptions = reactive({
  // 图例文字颜色
  textStyle: {
    color: "#333",
  },
  legend: {},
  grid: {
    left: "20%",
  },
  // 提示框
  tooltip: {
    trigger: "axis",
  },
  xAxis: {
    type: "category", // 类目轴
    data: [],
    axisLine: {
      lineStyle: {
        color: "#17b3a3",
      },
    },
    axisLabel: {
      interval: 0,
      color: "#333",
    },
  },
  yAxis: [
    {
      type: "value",
      axisLine: {
        lineStyle: {
          color: "#17b3a3",
        },
      },
    },
  ],
  color: ["#2ec7c9", "#b6a2de", "#5ab1ef", "#ffb980", "#d87a80", "#8d98b3"],
  series: [],
})

const pieOptions = reactive({
  tooltip: {
    trigger: "item",
  },
  legend: {},
  color: [
    "#0f78f4",
    "#dd536b",
    "#9462e5",
    "#a6a6a6",
    "#e1bb22",
    "#39c362",
    "#3ed1cf",
  ],
  series: []
})

// 加载表格
const getTableData = async  ()=>{
  const data =await proxy.$api.getTableData();
  tableData.value = data.tableData;
}

const getCountData = async  ()=>{
  const data =await proxy.$api.getCountData();
  countData.value = data;
}

const getChartData = async  ()=>{
  const {orderData,userData,videoData} =await proxy.$api.getChartData();
  // console.log(orderData.data);
  //对第一个图标进行x轴 和series 赋值
  xOptions.xAxis.data = orderData.date;
  xOptions.series = Object.keys(orderData.data[0]).map(val =>{
    return{
      name:val,
      data:orderData.data.map(item => item[val]),
      type:'line'
    }
  });
  const oneEchart = echarts.init(proxy.$refs['echart']);
  oneEchart.setOption(xOptions);
  //对第二个图标进行x轴 和series 赋值
  xOptions.xAxis.data = userData;
  xOptions.series = [
    {
      name:"新增用户",
      data:userData.map(item =>item.new),
      type:"bar"
    },
    {
      name:"活跃用户",
      data:userData.map(item =>item.active),
      type:"bar"
    }
  ]
  const twoEchart = echarts.init(proxy.$refs['userEchart']);
  twoEchart.setOption(xOptions);
  //对第三个图标进行x轴 和series 赋值
  pieOptions.series = [
    {
      data:videoData,
      type:"pie"
    }
  ]
  const threeEchart = echarts.init(proxy.$refs['videoEchart']);
  threeEchart.setOption(pieOptions);

  //ResizeObserver 如果监视的容器大小变化，如果改变会执行传递的回调 让大小根据页面大小变化
  observer.value = new ResizeObserver(entries => {
    oneEchart.resize()
    twoEchart.resize()
    threeEchart.resize()
  })
  //如果这个容器存在
  if (proxy.$refs["echart"]) {
    //则调用监视器的observe方法，监视这个容器的大小
    observer.value.observe(proxy.$refs["echart"]);
  }
}

onMounted(()=>{
  getTableData();
  getCountData();
  getChartData();
})

</script>

<template>
    <el-row class="home" :gutter="20">
      <el-col :span="8" style="margin-top: 20px">
          <el-card  shadow="hover">
            <div class="user">
              <img :src="getImageUrl('user')" class="user">
              <div class="user-info">
                <p class="user-info-admin"> admin</p>
                <p class="user-info-p"> 管理员</p>
              </div>
            </div>
            <div class="login-info">
              <p> 上次登录时间:<span>2024</span></p>
              <p> 上次登录地点:<span>上海</span></p>
            </div>
          </el-card>
        <el-card  shadow="hover" class="user-table">
          <el-table :data="tableData">
            <el-table-column
                v-for="(val,key) in tableLabel"
                :key="key"
                :prop="key"
                :label="val"
            > </el-table-column>

          </el-table>
        </el-card>
      </el-col>
      <el-col :span="16" style="margin-top: 20px">
        <div class="num">
          <el-card
              :body-style="{display:'flex' ,padding:0}"
              v-for="item in countData"
              :key="item.name"
          >
            <component :is="item.icon" class="icons" :style="{background:item.color}"></component>
            <div class="detail">
              <p class="num">￥{{item.value}}}</p>
              <p class="txt">￥{{item.name}}}</p>
            </div>
          </el-card>
        </div>
        <el-card class="top-echart">
            <div ref="echart" style="height: 280px">
            </div>
        </el-card>
        <div class="graph">
          <el-card>
            <div ref="userEchart" style="height: 240px"></div>
          </el-card>
          <el-card>
            <div ref="videoEchart" style="height: 240px"></div>
          </el-card>
        </div>
      </el-col>

    </el-row>
</template>

<style scoped>
.home{
  height: 100%;
  overflow: hidden;
  .user{
    display: flex;
    align-items: center;
    border-bottom: 1px solid #ccc;
    margin-bottom: 20px;
    img{
      width: 150px;
      height: 150px;
      border-radius: 50px;
      margin-right: 40px;
    }
    .user-info{
      p{
        line-height:40px;
      }
      .user-info-p{
        color:#999;
      }
      .user-info-admin{
        font-size:35px
      }
    }
  }
  .login-info{
    p{
      line-height:30px;
      font-size: 14px;
      color: #999;
      span{
        color: #666;
        margin-left: 60px;
      }
    }
  }
  .user-table{
    margin-top:20px;
  }
  .num{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    .el-card{
      width:32%;
      margin-bottom:20px;
    }
    .icons{
      width:80px;
      height:80px;
      font-size:30px;
      text-align:center;
      line-height:80px;
      color:#fff;
    }
    .detail{
      margin-left:15px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      .num{
        font-size:30px;
        margin-bottom:10px
      }
      .txt{
        font-size:15px;
        text-align:center;
        color:#999;
      }
    }
  }
  .graph{
    margin-top:20px;
    display:flex;
    justify-content:space-between;
    .el-card{
      width:48%;
      height:260px;
    }
  }

}


</style>
